Westwood sat on top of a white armoured vehicle and was joined by other anti-fracking protesters on the way.

Fracking is a controversial process for extracting natural gas from shale deep below the ground.

Anti-fracking campaigner Dame Vivienne Westwood, sits in a tank as she joins a group of anti-fracking protesters on their way to protest outside the constituency home of Prime Minister David Cameron, in Witney, Oxfordshire (Image: PA)